[computer-go] Progressive unpruning in Mango 19x19

[Jacques Basaldúa]

I am not an English speaker. I read both verbs for the first time in a 
mid-80s MS/DOS program called PC-Tools (Central Point Software). It was 
the first MS/DOS program that was able to move a complete directory from 
one path to another and it called that "pruning" and "grafting". Since 
then, many people I have read use "graft" as the opposite of "prune". In 
computing I thought that was the usual procedure. ( I also read the word 
"hardware" for the first time related with computers so my English 
perception may be a little focused ;-) )

Jacques.